Let's pass in ram flags just like we do with qemu_ram_alloc_from_file(),
to clean up and prepare for more flags.
Simplify the documentation of passed ram flags: Looking at our
documentation of RAM_SHARED and RAM_PMEM is sufficient, no need to be
repetitive.
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com> for memory backend and machine core
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <
20210510114328.21835-5-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
memfd_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
{
HostMemoryBackendMemfd *m = MEMORY_BACKEND_MEMFD(backend);
+ uint32_t ram_flags;
char *name;
int fd;
}
name = host_memory_backend_get_name(backend);
- memory_region_init_ram_from_fd(&backend->mr, OBJECT(backend),
- name, backend->size,
- backend->share, fd, 0, errp);
+ ram_flags = backend->share ? RAM_SHARED : 0;
+ memory_region_init_ram_from_fd(&backend->mr, OBJECT(backend), name,
+ backend->size, ram_flags, fd, 0, errp);
g_free(name);
}
size = buf.st_size;
/* mmap the region and map into the BAR2 */
- memory_region_init_ram_from_fd(&s->server_bar2, OBJECT(s),
- "ivshmem.bar2", size, true, fd, 0,
- &local_err);
+ memory_region_init_ram_from_fd(&s->server_bar2, OBJECT(s), "ivshmem.bar2",
+ size, RAM_SHARED, fd, 0, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
* @size: size of the region.
* @align: alignment of the region base address; if 0, the default alignment
* (getpagesize()) will be used.
- * @ram_flags: Memory region features:
- * - RAM_SHARED: memory must be mmaped with the MAP_SHARED flag
- * - RAM_PMEM: the memory is persistent memory
- * Other bits are ignored now.
+ * @ram_flags: RamBlock flags. Supported flags: RAM_SHARED, RAM_PMEM.
* @path: the path in which to allocate the RAM.
* @readonly: true to open @path for reading, false for read/write.
* @errp: pointer to Error*, to store an error if it happens.
* @owner: the object that tracks the region's reference count
* @name: the name of the region.
* @size: size of the region.
- * @share: %true if memory must be mmaped with the MAP_SHARED flag
+ * @ram_flags: RamBlock flags. Supported flags: RAM_SHARED, RAM_PMEM.
* @fd: the fd to mmap.
* @offset: offset within the file referenced by fd
* @errp: pointer to Error*, to store an error if it happens.
Object *owner,
const char *name,
uint64_t size,
- bool share,
+ uint32_t ram_flags,
int fd,
ram_addr_t offset,
Error **errp);
* Parameters:
* @size: the size in bytes of the ram block
* @mr: the memory region where the ram block is
- * @ram_flags: specify the properties of the ram block, which can be one
- * or bit-or of following values
- * - RAM_SHARED: mmap the backing file or device with MAP_SHARED
- * - RAM_PMEM: the backend @mem_path or @fd is persistent memory
- * Other bits are ignored.
+ * @ram_flags: RamBlock flags. Supported flags: RAM_SHARED, RAM_PMEM.
* @mem_path or @fd: specify the backing file or device
* @readonly: true to open @path for reading, false for read/write.
* @errp: pointer to Error*, to store an error if it happens
Object *owner,
const char *name,
uint64_t size,
- bool share,
+ uint32_t ram_flags,
int fd,
ram_addr_t offset,
Error **errp)
mr->ram = true;
mr->terminates = true;
mr->destructor = memory_region_destructor_ram;
- mr->ram_block = qemu_ram_alloc_from_fd(size, mr,
- share ? RAM_SHARED : 0,
- fd, offset, false, &err);
+ mr->ram_block = qemu_ram_alloc_from_fd(size, mr, ram_flags, fd, offset,
+ false, &err);
if (err) {
mr->size = int128_zero();
object_unparent(OBJECT(mr));